Railway-motor.



No. 747,765. PATENTED DEC. 22, 1903.

I E. I). PRIEST. RAILWAY MOTOR.

APPLICATION FILED SEPT. 16, 1902.

N0 MODEL.

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i Edward ria ST. m L fltf UNITED STATES Patented December 22, 1903.

PATENT OFFICE.

EDWARD D. PRIEST, OF SCHENEOTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRICCOMPANY, A CORPORATION OF NEW YORK.

RAl LWAY-M OTO R.

SPECIFJLGATION forming part of Letters Patent N 0. 747,765, datedDecember 22, 1903.

Application filed September 16,1902. Serial No. 123,635. 1N0 model.)

To aZZ whorl t it may concern:

Be it known thatl, EDWARD D. PRIEsT, a citizen of the United States,residing at Schenectady, county of Schenectady, State of New 5 York,haveinvented certain new and useful Improvements in Railway-Motors, ofwhich the following is a specification.

My invention relates to frames for dynamoelectric machines, andespecially for inclosed to railway-motors.

As railway-motor frames have been constructed heretofore they have beeneither of the one-part box type, with the armature removable endwisetherefrom, or of the split type, divided substantially in the plane ofthe axis of the armature and the truck-shaft, with the lower partadapted to be let down in order to permit of inspection and repair ofthearmature and associated parts.

2a The box type, while possessing many advantages, such as rigidity andfew parts, is nevertheless objectionable on account of the difficultywith which the operative parts may be inspected and repaired. The splittypes as made heretofore, while permitting of more ready access to theoperating parts than the box type, are, however, more objectionable onaccount of the tendency of the parts to work loose, and the consequentdisalinement go of the bearings.

The object of my invention is to providea motor-frame which may bereadily opened to permit of inspection and removal of operating partsand at the same time possess all the advantages of the box-frame.

My invention will be more readily understood by reference to theaccompanying d rawings, forming a part of this specification, in which--Figure 1 is a side elevation of a motor embodying myinvention with theupper part of the frame and the armature raised from the lower part andwith ce*tain parts shown broken away, and Fig. 2 is an end elevation 5of the motor with the supporting cross-bar and axle of the truck shownin section.

As shown in the drawings, the motor-frame A is of the well-known formwith four fieldpoles, one projecting inwardly from each of the inclinedsides. The frame is supported at one side 011 the truck-axle B by meansof bearings connected thereto and at the other on the cross-bar O of thetruck by means of the clip D, which engages at its upper end with a bolt1, carried by lugs 2, integral with the frame A, and at its lower endwith the cross-bar C and held thereon by the bolt 3.

In order that the commutator end of the frame A may be opened to permiteasy access to the brushes and connections,a pivoted 6o trap a isprovided at the upper side of that end of the frame. The trap 4; ispivoted at its middle to the ends 5 of the links 6, carried onstub-shafts 7 upon opposite sides of the frame A, and about which arecoiled springs 8, which act to hold the trap tsecurely pressed upon itsseat. At the top of the frame A alug 9 is provided to engage the edge ofthe trap 4: and hold it out of the way when raised.

In order that the armature may be readily inspected, the frame A issplit or divided on a plane 10 considerably above the plane of the axisof the armature and the truck-axle B and below the lower points ofattachment of the upper two field-poles with the frame, so that theupper portion E may be removed without interference with any of thebearings or connections other than the circuit-wires l and these wires Fmay be readily discon- 8o nected at the splice-blocks 11. The upper partE of the frame may be secured to the lower part by lugs 12 and bolts 13,located at or near each of its four corners.

In order that the armature G may be removed from the frame A, thebearings 14 for its shaft 15 are detachably connected to the frame andare adapted to be raised therefrom with the armature by slinging aboutthe outer ends thereof. The lower part of frame A 0 has recesses in itsends, as indicated in dotted lines, extending vertically on oppositesides of the armature-shaftin Fig. 2 and semicircular ribs 16,projecting from the planes thereof. The upper part E of the frame hascorresponding ribs 17, but considerably less than a halfcircle inextent. The bearings 14 are extended into large disks 18, which areadapted to rest upon the ends of the frame A and engage at theirperipheries with the ribs 16 and 17, and 1(0 be thereby securely heldagainst radial movement when the upper part E of the frame is in place.Bolts 19 extend through the opposite sides of the disks 1S and theportions of the walls of the lower part of the frame overlapped by thedisks and serve to securely clampthe bearings upon their seats. Thebearing-pieces 14 have the usual oil-boxes 20, and on the lower edgesare fingers 21, adapted to prevent the sling-rope from slipping over theends of the boxes. Around the bolts are semicircular Webs 22, whichserve to protect the nuts and also to provide supports for thenut-locking means 23.

The gear-case H is split in a plane passing through the aXes of thearmature and truckaXle, and the respective halves are adapted to be heldtogether by bolts 26, passing through lugs at the ends thereof. Threepoints of suspension are provided between the gear-case H and the lowerhalf of the motor-frame A, consisting of the bracket 24 and horizontalbolt 25 atthepinion end,thehorizontal bo1t27,located vertically beneaththe truck-axle B, and the vertical bolt 28, extending through a lug 29,projecting horizontally from the gear-case above the truck-axle andoverlying a corner of the upper surface of the lower part of the splitframe and tapped into the said frame. It is to be noted that thisarrangement provides the same rigid support for the gear-case as in thebox type of motor, and at the same time the upper half is left entirelyfree therefrom.

The motor-frame is provided with the usual accessories for cleaning andWiring; but as these in no Way constitute any part of my invention nodescription thereof will be made here.

By the above arrangement the disadvantages and objections of thedownwardly-opening split frames are entirely overcome and the necessityof disconnectingthe motor from the truck, as where the box type of frameis used, is entirely avoided.

My invention is applicable to substantially all forms of inclosedmotors, and I therefore do notrestrict myself to the form shown anddescribed. Moreover, many changes of proportions and details may be madewithout departing from the spirit of my invention.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. A split frame for dynamo-electric machines, having a flanged ordisk-shaped bearing for the armature adapted to seat against the end ofone part of said frame, and means for clamping said bearing to its seat.

2. A split frame for dynamo-electric machines, having ribs on the endsof the frame, bearings for the armature-shaft adapted to seat againstthe ends of the frame and engage said ribs, and means for securing saidbearings to one part of the split frame.

3. A frame for multipolardynamo-electric machines divided into unequalparts, and having flanged or disk-shaped bearings for the armature-shaftsecured to the larger partof the split frame by transverse bolts, andmeans carried by both parts of said frame for peripherally holding saidflanged bearings.

4. Aframe for railway-motors havingthereon bearings for the truck-axle,and flanged or disk-shaped bearings forthe armature-axle detachablysecured to said frame by transverse bolts, said frame being dividedabove the plane of said bearings and each part thereof provided withmeans for peripherally engaging said flanged bearings.

' 5. A frame for multipolar railway-motors having thereon bearings forthe armatureshaft and the truck-axle, said frame being divided out ofthe plane of said bearings with an equal number of poles upon each partthereof and the larger part of said frame being provided with recessesfor detachably receiving the armaturebearings.

A motor-frame having an opening in the upper part thereof, a trap forsaid opening having centrally-located pivots upon its ends, andspring-pressed arms or links pivoted to said frame and engaging thepivots upon said trap.

7. The combination of a split frame for car-motors, and a gear-caseconnected to one part of said split frame at points on opposite sides ofthe car-axle.

8. The combination of a split frame fo car-motors, and a split gear-caseconnected to one part of said frame at three points triangular-1ylocated.

9. The combination of a frame for carmotors unequally split in a planeabove the axles of the car-truck and the armature, and a gear-caseconnected to the lower part of said frame at two points above and belowthe Truck-axle and one near the pinion end thereof.

10. The combination of a frame for carmotors unequally split in a planeabove the axles of the car-truck and the armature, a.

gear-case having lugs or brackets extending toward the lower part of theframe above and below the plane of division thereof, and bolts passingthrough said lugs or brackets and engaging said frame.

In Witness whereof I have hereunto set my hand this 15th day ofSeptember, 1902.

ED'WARD D. PRIEST. W'itn esses:

EDWARD WILLIAMs, Jr., HELEN ()RFORD.

